Lubricator



Ma 5 1931. cs. 0. PEARSON LUBRICATOR Filed Feb. 16. 1929 2 Sheets-Sheetl damn,

"UNI- 20/40 CPmnm/a Ma 5, 1931. G. c. #EARSON 1,864,182

LUBRICATOR I Filed Feb. 16. 1929 2 Sheets-Sheet 2 Patented May 5, 1931 TFEQ GUSTAV C. PEARSON, OF DENVER, CGDOBJLDO, ASSIGNOR T GARDNER-DENVERCOM- PANY, OF DENVER, COLOR-ADO, A COBEGRATION 0F DELAWARE LUBRICATORApplication filed February 16, 1929. Serial No. 340,388.

In connection with the use of fluid actuated tools, the employment oflubricators placed in the air lines of hose supplying motive fluid tothe tools has been found very satisfactory for maintaining the toolsproperly lubricated.

It has been the custom to some extent where a number of tools aresupplied from a single line through a manifold or by branches leadingfrom the main line, to put a lubricator in the main line in advance ofthe branches for the purpose of lubricating all the tools. This,however, has not proven entirely satisfactory for the reason that thedifferent tools require different amounts of lubricant. Therefore onemay be over-supplied or flooded and another may not receivesufiicientoil/ 7 It is the primary object of the present inventiontoprovide an air line lubricator' for a plurality of tools, provisionbeing made whereby each tool is independently supplied and the amount oflubricant thereto can be independently controlled.

The embodiment of the invention that is at present considered thepreferable one, is illustrated in the accompanying drawings, wherein: Y

Figure lis a plan view of the lubricator, certain parts being shown insection.

Figure 2 is a side elevationof the same. I

Figure 3 is a rear elevation partly. in section.

Figure 4: is a transverse sectionon the line 44 of Figures 1 and 2.

Figure 5 is a longitudinal-sectional view onthe line 55 of Figure 1.

Figure 6 is a detail cross sectional view on an enlarged scaleand on theline 6-6 of Figure 4:. 1

Figure 7 is a detail perspective view of one of the lubricant supplystems.

Figure 8 is a detail perspective view of the retaining and holdingspring for such stem. 7

' In the'embodiment disclosed an elongated metal casing 9' is employed,the interior of which forms a lubricant reservoir 10. In the top of thecasing at the rear end is a from the reservoir 10 and its bottomterminates short of the bottom of said reservoir, so that lubricantplaced in the reservoir can flow freely around the same. The inletnipple 13 is interiorly threaded as indicated at 15 so that it can becoupled to a supply hose leading from any suitable source of motivefluid under pressure. Extending from the opposite sides of the conduit14 and in communication therewith are trans versely disposed outletbranches 16, also preferably formed integral with the casing and openingthrough opposite sides of the same, the ends being also in the form ofinternally threaded nipples 17, to which supply lines leading to thefluid operated tools can be connected. These branches as clearly shownin Figures 4: and 5 are in the upper portion of the chamber 10 andterminate short of the bottom thereof, so that the oil or otherlubricant can flow freely beneath them. p

The branches 16 are transversely pierced through their tops and bottomsby alined openings 18 and 19, the former being formed in the bottoms ofupstanding nipples 20 formed on the top of the casing, said nippleshaving enlarged chambers 21, the bottoms of which are beveled to provideseats 22. In the openings 1819 are rotatably mounted stems 23 that thuspass across the passageways of the branches 16 and as shown, de pendinto the lower portion of the reservoir 10. The upper ends of thesestems have enlarged beveled heads 24: that rest upon the beveled seats22 and they are further provided just below said heads 24 with annulargrooves 25 that receive spring friction collars 26. These collars areexpansible. and frictionally bear against the walls of the upperopenings 18 so as to hold the stems wherever placed and yet permit theirrotation. To this end the heads 24: are provided with sockets 27 toreceive the nibs of a turning key. The stems are provided in their lowerportions with longitudinal passageways 28 opening through their lowerends and terminating at their upper ends in transverse ports 29 thatopen through the opposite sides of the stem within the passageways ofthe branches 16. Above the ports 29 are right angularly set transverseports 30, into which open the lower ends of longitudinal passageways 31that extend upwardly through the upper ends of the stems and open intothe chambers 21. From said chambers 21 passageways 32 lead down wardlyand open into the upper portion of the reservoir 10.

Vhen the manifold is coupled up by means of the nipple 13 with a mainsupply hose and two or more of the branches (any unused branches beingplugged) are connected to motive fluid operated instruments, such as aplurality of rock drills, it will be evident that the stems passingthrough the branches which are in active use, will independently supplylubricant from the common reservoir to said branches and that thislubricant will be vaporized and carried to the tools. If a maximumsupply is desired to one of the tools, the stem is set so that theport"29 lies longitudinally of the branch in which case it is found thata maximum supply of oil will be carried up the passageway 28 anddelivered into the air or other motive fiuid stream. If, however, one ormore of the tools need a less amount, the stem in the branch of themanifold to which that tool is connected, can be turned with the port 29more nearly to a right angular position to the passageway through thebranch and the supply of oil thereby cut down as desired.

Vith this structure therefore a common lubricator is provided that canbe made to properly serve a plurality of tools.

From the foregoing, it is thought that the construction, operation andmany advantages of the herein described invention will be apparent tothose skilled in the art without further description and it will beunderstood that various changes in the size, shape, proportion and minordetails of construction may be resorted to without departing from thespirit or sacrificing any of the advantages of the invention.

\Vhat I claim is:

1. In a lubricator, the combination with a casing having a lubricantreservoir, of a motive fluid supply manifold associated with thereservoir and comprising a main supply conduit having a plurality ofbranches for connection with different fluid operated in-- struments,and stems extending directly to the reservoir at different points andhaving passageways for directing lubricant from the reservoir to thebranches of the manifold.

2. In a lubricator, the combination with a casing having a chamberconstituting a lubricant reservoir, of a manifold for the transmissionof motive fluid formed in but walled from the reservoir and including aconduit having a plurality of branches eX tending along the top of thereservoir, and independent stems mounted transversely of the branchesand extending directly into the reservoir at different points, saidstems having passageways for conducting lubricant from the lower portionof the reservoir into the branches.

3. In a lubricator, the combination with a casing having a chamberconstituting a lubricant reservoir, of a manifold for the transmissionof motive fluid formed in but walled from the reservoir and including aconduit having a plurality of branches located over the reservoir,independent stems adjustably mounted transversely of the branches anddepending into the lower portion of the reservoir, said stems havingpassageways for conducting lubricant from the lower portion of thereservoir into the branches, and means accessible from the exterior ofthe casing and branches for adjusting the stems.

:12. 1.11 d, lLlUllLtLl/UI, [i116 DUI lUlllcllblU 1 VIL'II a casinghaving an internal chamber forming a lubricant reservoir, of a manifoldformed in the upper portion of the casing and including a main supplyconduit and oppositely extending branchesleading therefrom and openingat opposite sides of the casing, said branches extending over differentportions of the reservoir and being transversely pierced, and stemsmounted on the transverse perforations and depending be low the branchesinto the lower portion of the reservoir at different points, said stemshaving passageways for the lubricant opening into the lower portion ofthe reservoir and into the branch passageways, the stems beingaccessible at the top of the casing.

5. In a lubricator, the combination with a casing, of a manifold for thetransmission of motive fluid formed in the top of the easing andincluding a supply conduit having a plurality of outlet branches, saidcasin having a chamber beneath the manifold ant forming a lubricantreservoir that is common to and beneath the branches, and stemsdepending from the branches into the portion of the reservoirtherebeneath and at different points therein, said stems havingpassageways for conducting the lubricant from the reservoir into therespective branches of the manifold.

In testimony whereof, I afiix my signature.

GUSTAV G. PEARSON.

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